April 17th will be the 100th anniversary of the busiest day in Ellis Island's history—a day when 11,747 people passed through the immigration station.
A usual day saw some 5,000 immigrants processed. It was the highpoint of 1907 when 1,285,349 immigrants entered the United States, with Ellis Island processing nearly 80 percent of those new arrivals. The country would not welcome as many immigrants again until 1990. [Link]By way of comparison, on a typical day in 2006 [pdf] U. S. Customs and Border Protection processed 1.1 million passengers and pedestrians—240,737 arriving by air, 71,151 by ship—and 327,042 incoming privately owned vehicles.